// Copyright 2015-2020 Parity Technologies (UK) Ltd.
// This file is part of OpenEthereum.

// OpenEthereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// OpenEthereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with OpenEthereum.  If not, see <http://www.gnu.org/licenses/>.

use ethereum_types::{H160, H256, U256};
use types::log_entry::{LocalizedLogEntry, LogEntry};
use v1::types::Bytes;

/// Log
#[derive(Debug, Serialize, PartialEq, Eq, Hash, Clone)]
#[serde(rename_all = "camelCase")]
pub struct Log {
    /// H160
    pub address: H160,
    /// Topics
    pub topics: Vec<H256>,
    /// Data
    pub data: Bytes,
    /// Block Hash
    pub block_hash: Option<H256>,
    /// Block Number
    pub block_number: Option<U256>,
    /// Transaction Hash
    pub transaction_hash: Option<H256>,
    /// Transaction Index
    pub transaction_index: Option<U256>,
    /// Log Index in Block
    pub log_index: Option<U256>,
    /// Log Index in Transaction
    pub transaction_log_index: Option<U256>,
    /// Log Type
    #[serde(rename = "type")]
    pub log_type: String,
    /// Whether Log Type is Removed (Geth Compatibility Field)
    #[serde(default)]
    pub removed: bool,
}

impl From<LocalizedLogEntry> for Log {
    fn from(e: LocalizedLogEntry) -> Log {
        Log {
            address: e.entry.address,
            topics: e.entry.topics.into_iter().map(Into::into).collect(),
            data: e.entry.data.into(),
            block_hash: Some(e.block_hash),
            block_number: Some(e.block_number.into()),
            transaction_hash: Some(e.transaction_hash),
            transaction_index: Some(e.transaction_index.into()),
            log_index: Some(e.log_index.into()),
            transaction_log_index: Some(e.transaction_log_index.into()),
            log_type: "mined".to_owned(),
            removed: false,
        }
    }
}

impl From<LogEntry> for Log {
    fn from(e: LogEntry) -> Log {
        Log {
            address: e.address,
            topics: e.topics.into_iter().map(Into::into).collect(),
            data: e.data.into(),
            block_hash: None,
            block_number: None,
            transaction_hash: None,
            transaction_index: None,
            log_index: None,
            transaction_log_index: None,
            log_type: "pending".to_owned(),
            removed: false,
        }
    }
}

#[cfg(test)]
mod tests {
    use ethereum_types::{H160, H256, U256};
    use serde_json;
    use std::str::FromStr;
    use v1::types::Log;

    #[test]
    fn log_serialization() {
        let s = r#"{"address":"0x33990122638b9132ca29c723bdf037f1a891a70c","topics":["0xa6697e974e6a320f454390be03f74955e8978f1a6971ea6730542e37b66179bc","0x4861736852656700000000000000000000000000000000000000000000000000"],"data":"0x","blockHash":"0xed76641c68a1c641aee09a94b3b471f4dc0316efe5ac19cf488e2674cf8d05b5","blockNumber":"0x4510c","transactionHash":"0x0000000000000000000000000000000000000000000000000000000000000000","transactionIndex":"0x0","logIndex":"0x1","transactionLogIndex":"0x1","type":"mined","removed":false}"#;

        let log = Log {
            address: H160::from_str("33990122638b9132ca29c723bdf037f1a891a70c").unwrap(),
            topics: vec![
                H256::from_str("a6697e974e6a320f454390be03f74955e8978f1a6971ea6730542e37b66179bc")
                    .unwrap(),
                H256::from_str("4861736852656700000000000000000000000000000000000000000000000000")
                    .unwrap(),
            ],
            data: vec![].into(),
            block_hash: Some(
                H256::from_str("ed76641c68a1c641aee09a94b3b471f4dc0316efe5ac19cf488e2674cf8d05b5")
                    .unwrap(),
            ),
            block_number: Some(U256::from(0x4510c)),
            transaction_hash: Some(H256::default()),
            transaction_index: Some(U256::default()),
            transaction_log_index: Some(1.into()),
            log_index: Some(U256::from(1)),
            log_type: "mined".to_owned(),
            removed: false,
        };

        let serialized = serde_json::to_string(&log).unwrap();
        assert_eq!(serialized, s);
    }
}
